Direct analysis of human hair before and after cosmetic modification using a recent data fusion method

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dc.contributor.authorSantos, Mônica C. [UNESP]
dc.contributor.authorPereira, Fabíola M.V. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionIdaho State University
dc.date.accessioned2020-12-12T01:09:46Z
dc.date.available2020-12-12T01:09:46Z
dc.date.issued2020-01-01
dc.description.abstractThe cosmetic modification of hair is a very common procedure used to mask or cover evidence at a crime scene. Deoxyribonucleic acid (DNA) tests are expensive and require good-quality collection of samples and a database profile. To overcome these challenges, direct analysis was performed on a large set of hair strands collected from individuals, denoted original samples, and the data were compared with those of the same samples after cosmetic modification performed by bleaching the samples in the laboratory. A total of 127 samples were evaluated in this study using two analytical techniques, wavelength-dispersive X-ray fluorescence (WDXRF) and laser-induced breakdown spectroscopy (LIBS). Instead of testing many algorithms to develop classification models for the original and bleached samples, a recent method was applied that combines information from 17 classifiers. Data fusion was also evaluated to improve the accuracy of the classification model, which was higher than 99.2%, with no requirements to select eigenvectors or thresholds.en
dc.description.affiliationInstituto de Química Universidade Estadual Paulista (Unesp)
dc.description.affiliationDepartment of Chemistry Idaho State University
dc.description.affiliationUnespInstituto de Química Universidade Estadual Paulista (Unesp)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCAPES: 001
dc.description.sponsorshipIdFAPESP: 2016/00779-6
dc.description.sponsorshipIdFAPESP: 2017/05550-0
dc.format.extent33-39
dc.identifierhttp://dx.doi.org/10.21577/0103-5053.20190121
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 31, n. 1, p. 33-39, 2020.
dc.identifier.doi10.21577/0103-5053.20190121
dc.identifier.fileS0103-50532020000100033.pdf
dc.identifier.issn1678-4790
dc.identifier.issn0103-5053
dc.identifier.lattes5704445473654024
dc.identifier.orcid0000-0002-8117-2108
dc.identifier.scieloS0103-50532020000100033
dc.identifier.scopus2-s2.0-85077164656
dc.identifier.urihttp://hdl.handle.net/11449/198328
dc.language.isoeng
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectChemometrics
dc.subjectData fusion
dc.subjectHair
dc.subjectLIBS
dc.subjectWDXRF
dc.titleDirect analysis of human hair before and after cosmetic modification using a recent data fusion methoden
dc.typeArtigo
unesp.author.lattes5704445473654024(2)
unesp.author.orcid0000-0002-8117-2108(2)

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